net.liftmodules.widgets.rssfeed.RSSfeed.scala Maven / Gradle / Ivy

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/*
 * Copyright 2007-2010 WorldWide Conferencing, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.liftmodules {
package widgets {
package rssfeed {

import _root_.scala.xml._
import _root_.java.net.{URLConnection, URL}
import net.liftweb.util.Helpers._
import scala.collection.mutable.Queue

object RSSFeed {
  /**
   * Renders an RSS feed using a list
   */
  def apply(feedUrl: String) = new RSSFeed().render(feedUrl)
}

class RSSFeed {
  /**
   * Renders an RSS feed using a list
   */
  def render(feedUrl: String): NodeSeq = {
    val feed = getFeed(feedUrl)

    var src = new Queue[Node]()

    src += { ( feed \ "channel" \ "title" ).text }

    for (c <- findElems(feed){_.label == "item"}) {
      src += {(c \\ "title").text}
    }

    {src}
  }

  /**
   * Returns the feed as a plain XML
   */
  def getFeed(feedUrl: String): Elem = {
    val u = new URL(feedUrl)
    val con = u.openConnection
    val is = con.getInputStream
    doClose(is) {
      XML.load(is)
    }
  }

}

}
}
}